package cn.how2j.trend.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @author LiGang
 * @version 1.0
 * @date 2021/4/8 12:27
 */

@Component
public class SpringContextUtil implements ApplicationContextAware {

    private SpringContextUtil() {
        System.out.println("SpringContextUtil()");
    }

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        System.out.println("applicationContext:"+applicationContext);
        SpringContextUtil.applicationContext = applicationContext;
    }

    public static <T> T getBean(Class<T> clazz) {
        return applicationContext.getBean(clazz);
    }

}
